class Settings():
	"""存储《外星人入侵》的所有设置的类"""
	
	def __init__(self):
		"""初始化游戏的设置"""
		#屏幕设置
		self.screen_width = 1200
		self.screen_height = 800
		self.bg_color = (230, 230, 230)
		
		#飞船的设置
		self.ship_speed_factor = 1.5
		self.ship_limit = 3
		
		#子弹设置
		self.bullet_speed_factor = 1
		self.bullet_width = 300
		self.bullet_height = 15
		self.bullet_color = 60, 60, 60
		self.bullet_allowed = 3
		
		#外星人设置
		self.alien_speed_factor = 1
		self.fleet_drop_speed = 10
		# fleet_direction 为 1 表示向右移，为 -1 表示向左移
		self.fleet_direction = 1
		
		#以什么样的速度加快游戏节奏
		self.speedup_scale = 1.1
		
		#外星人点数的提高速度
		self.score_scale = 1.5
		
		self.initialize_dynamic_settings()
	
	def initialize_dynamic_settings(self):
		self.ship_speed_factor = 1.5
		self.bullet_speed_factor = 3
		self.alien_speed_factor = 1
		
		# fleet_direction 为 1 表示向右移，为 -1 表示向左移
		self.fleet_direction = 1
		
		#记分
		self.alien_points = 50
	
	def increase_speed(self):
		""" 提高速度设置和外星人点数 """
		self.ship_speed_factor *= self.speedup_scale
		self.bullet_speed_factor *= self.speedup_scale
		self.alien_speed_factor *= self.speedup_scale
		
		self.alien_points = int(self.alien_points * self.score_scale)
		print(self.alien_points* self.score_scale)
		
